Twisting mechanism



Jan. 3, 1939. w. M. CAMP TwIsT'ING MECHANISM 3 Sh'eetSv-Sheei'I l Filed Ma'y 27, 1937 INVENTOR.

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Jan. 3, 1939. w. M. CAMP 2,142,111

TwIsTING MlaJcHANIsn/I Filed May 27, 1957 5 Sheets-Sheet ,12v

Jan. 3, 1939. w. M. cAMP 2,142,111 I TWISTING MECHANISM Filed May 27, 1937 3 Sheets-Sheet 5 Patented Jan. 3, 1939 TWISTING MECHANISM William M. Camp, Glen Ridge, N. J., assignor to The Clark Thread Company, Newark, N. J.,A a corporation o! New Jersey Application May 27, 1937, semi No. 145,011y

8Clalms.

This invention relates to a novel and improved form of twisting orspinning mechanism, which for convenience will hereinafter be referred to as a twisting mechanism and the novel features v thereof will be best understood from the following description and the annexed drawings, in which I have shown selected embodiments of the invention and in which:

Fig. 1 is a fragmentary front elevation of a portion of a twisting frame 'having one form of the invention embodied therein; Fig. 2 is a section substantially on the line 2-2 of Fig. 1;

Figs. 3, 4, and 5 are views corresponding to Fig. 2 but showing the parts in successively different positions during the operation of winding a bobbin; v Fig. 6 is a view corresponding to Fig. 2 but showing a different arrangement' for driving the spindle and ring,

Referring iirst to Figs. 1 to 5, inclusive, I have indicated therein a spindle rail I carrying a spindle 2 extending upwardly therefrom and rotatably mounted thereon at its lower end. For the sake of convenience, I shall throughout the description and claims refer to the various parts as-if the rail were horizontal and the spindle vertical. This is a usual arrangement of the parts and therefore Vsuch 'relation will be assumed 80 for convenience in defining the relations between them. It is to be understood, however, that'reference to the' horizontal and vertical is not intended as limiting the invention.

Located above the rail `I and parallel thereto is a guide rail 3 having an opening therein through which the spindle 2 may pass. For the sake of simplicity, I have shown only one spindle, 'although it isl to be understood that ordinarily a plurality of spindles will be arranged along the- 0 front of a frame, as is common practice. It will also be understood that the spindle rail may be traversed or reciprocated in a vertical direction during the formation of the bobbin on the core. Mechanisms for-performing this function and for controlling the traversing movement are well known in the art, and since a description of their details is not necessary to an' understanding of this invention, those details have beeny omitted. j It is sufcient for an understanding of this invention that it be understood that the rails I and 2 may be moved relative to each other, and

I shall assume that the. rail I is moved towards and away from the relatively xed rail 9, being a guided in that movement by guide rods l xed i which contacts with the spindle, being located 10 at the bottom of a downward extension 9 of the hub. The hub' is also provided with an upward extension Ill, and throughout the length of this hub, except at the 'end l, the hub is parallel to lthe spindle but is spaced away from the periphery l5 of the spindle a distance sufficient to receive the core II of a bobbin. This core, as is common in the art, will fit the spindle snugly enough to rotate therewith or, if desired, may be secured to the spindle in any manner now known in the art, and 20 the annular space surrounding the spindle is suflcient in amountl so that the outer surface of the core will not engage the inner surface of the hub with suiiicient friction to prevent thenormal traversing movements of the spindle and core. 25'

In other words, the core will move with the spindle at all times.

The downward extension 9 of the hub of the pulley 8 is rotatably supported in the guide r'ail 3 by any suitable bearing andat the same time 30 is held against movement longitudinally of the spindle. This bearing may comprise a sleevev I2 disposed in the opening I3 in the rail and held against downward -movement by a collar I4 threaded to the sleevev and resting on top of the rail. Upward movement of the sleeve I2 is prevented by shoulders I5 engaging the bottom of the rail, as shown in Fig. l. Extending inwardly of the sleeve is an annular flange I'B on which is rotatably mounted a bearing member Il engaged 40 by a nut I 8 threaded on the end I of the hub. Between the wall of the sleeve and the outer wall of the hub 9 are disposed suitable ball races to receive balls I9 which are held in place between the bearing member I1 and the internal collar 40 ring 20 which has threaded engagement with the sleeve, as shown. v Mounted on the upward extension It) of the hub is a bushing 2I` providedv with a flange 22 engaging the top of the pulley 8. Rotatably mounted on the bushing 2| is a second pulley 23' which rests upon the iiange 22, ,and vertical movement of the pulley is prevented by. means of a collar 24 shown as secured to the' bushing by means of aset screw 25.

i cup 26 carrying a traveler ring 21 rigidly secured to the cup by any suitable means,` the `details of which are unnecessary to an understanding of the invention and accordingly have been omitted. On the traveler ring is slidably mounted a traveler 28.

The cup 26, as will be noted, is shallow and the parts are so proportioned that the core Il is disposed within the annular space between the spindle and hub for the major portion of its ylength and so that only its upper end will project into the space inside the cup when the parts are in the positionvshown in Fig. 2. Inv other Words, when the parts are in position to start winding of the bobbin on the core, the core is disposed within said annular space except forA a small portion thereof in the cup, and the upper end of the core which receives the end windings of the bobbin is disposed within the traveler ring 21. The lower end of the core rests upon a bushing 29 at 'the lower end of the annular space where it is xed, this bushing being xed on the spindle by any suitable means, not shown, so that it will move vertically with the spindle.

In operation, thread 30 from a suitable source 'of supply may be passed.' through the traveler 28 on the ring and then secured to the core in a usual manner. Then the winding and twisting operation may begin, the pulley 8 being rotated by a belt 3| and the pulley 23 by a belt`32. The pulleys may be rotated at any desired speed so as to impart any desired twist to .the thread. The traveler 28 will move along the ring, but since this ring itself is rotating with the pulley 23, the amount of wear between the ring and the traveler on it is greatly reduced.

I am aware that various attempts have been made to drive the traveler ring, but where high speeds are used there have been practical dif culties which are avoided by the arrangement described above. It will be seen that the cup 26 and the pulley which drives it. are compact and the greater proportion of the mass thereof is close to the spindle, thus obviating diculties which occur where such mass is located at a distance from the center of rotation. Similarly, by making the cup 2 6 shallow and placing the core within the elongated hub, it is possible to avoid any such disadvantageous arrangement y as shown, for example, in the patent to Darker 13,024, where the depth of the cup supporting the traveler ring is so great as to make the construction unsuitable for high speeds. I

The initial winding is indicated in Fig. 2, and this winding may continueuntil the stage indicated in Fig. 3, where there is shown a part 33 of the bobbin on the core II. This part 33 is preferably that which forms the bottom ofthe nished bobbin, and during the formation of this part the usual traversing motion of the rail l may take place. The traversing mechanism is readily capable of adjustment so that the bobbin may be wound upside down in the manner indicated. A

In Fig. 4 I have shown a subsequent step in which a second part 34 of `the bobbin is shown as being wound, and flnally-in Fig. 5 I have shown the 'bobbin as approaching completion.

This winding operation may 'all .be performed vate at 10,000 R. P. M., whereas the ring may be rotated at a speed of 9,500 R. P. M. These speeds are taken merely as illustrative of -relatively high speeds which are possible with this invention.

`Because of the relatively small speed between the two pulleys, no greasing or other lubrication is necessary between those parts, and in fact the entire structure is one which avoids the use of any lubricating material in any place where it will be likely to reach thethread or yarn which is being Wound.

In Fig. 6 I have shown a different embodiment in which the rails I and 3 and the spindle 2 are constructed and arranged substantially as -previously described'in connection with Figs. 1 to 5, inclusive. The cup 26' in this instance is shown as being of slightly different form and as having a different form of lring 21' and traveler 28. The cup has a hub 35 secured to the rotatable armature 36 of a motor 31, and the hub 38,'corresponding to the pulley 8, is secured to the rotatable armature 39 of a motor 40. This hub 38 is splined to the spindle 2 at its lower end 1 as before. The two motors may be operated at different speeds and may be used to. form a driving means for the spindleand ring, respectively, it being understood that upon the-supplying of electric current to the two motors, the armatures thereof will revolve in the manner well known in the electric art and thus independently rotate the cup and the spindle'. The operation of the form shown in Fig. 6 is the same as that shown in the other figures and previously described and therefore no further -detail showing is believed to be necessary.

While I have shown the invention as embodied in specific forms, it is to be understood that various changes in details may be made without departingfrom `the scope of the invention, as defined by the appended claims.

I claim:

1. A twisting mechanism comprising a spindle rail having a spindle-rotatably supported thereon but movable therewith, a guide rail above and parallel to said spindle rail and having an opening through which said spindle passes, one of annular space around the spindle downwardly from the bottom of the cup a suicient distance to receive a tubular core of a bobbin with its upper end within said ring, whereby upon relative movement between said rails said core may and within said cup while thread is being wound on the core to "form' a. bobbin.

2. A twisting mechanism comprising a spindle rail having a spindle rotatably supported thereon but movable therewith, a guide rail above and parallel to said spindle rail and having an openinggthrough which said spindle passes, one of vsaid rails being movable towards and away from the other,- a pulley splined to said spindle and having an elongated hub spaced from the spindie a sumcient distance to receive the core of a `move with said spindle upwardly in said space bobbin, a cup surounding said spindle above said guide rail and supporting a traveler ring at its upper edge, l depth than the length of a bobbin core, a bearing at the bottom of said cup rotatably mounted on said pulley hub, means preventing movement of the cup relative to said guide rail lengthwise of the spindle, means to rotate said cup on said spindle, the parts being `yso proportioned that a bobbin core in the space between the spindle and hub willA project upwardly within said ring, whereby uponrelative movement between said rails said core may move with said spindle upwardly in said space and within' said cup while thread is being wound onthe core to form a bobbin.

3. A twisting mechanism comprising a spindle rail having a spindle rotatably supported thereon but movable therewith, a guide rail above and parallel to said spindle rail and having an opening through which'said spindle passes, one of said rails being movable towards and away from the other, a.pul1ey splined to said spindle and having an elongated hub spaced from thespindlevl a suilicient distance to receive the core of a bobbin, a cup surrounding said spindle above said guide rail and supporting a traveler ring at its upper edge, said cup being ofmaterially less depth than the length of a bobbin core, a bearing at the bottom of said cup rotatably mounted on said pulley hub, means preventing movement of the cup'relative to said guide rail lengthwise of the spindle, a pulley formed on said bearing to rotate said cup on said spindle, the parts being so proportioned that a 'bobbin' core in the space between the spindle and hub will project upwardly within said ring, whereby uponl relative movement ybetween said rails said core may move with said spindle upwardly in said space and within said cup while thread is being wound on the core to form a bobbin. I

4. A twisting mechanism comprising a spindle rail having a spindle rotatably supported thereon but movable therewith, a guide rail above vand parallel to' said spindle rail and having an' opening through which said spindle passes, one of said rails being movable towards and away from the other, a pulley above said guide rail and having an elongated hub extending downwardly through said'opening, means rotatably supporting said .hub `in said opening, said hub being splined to said spindle at the lower end of the huband spaced therefrom-above said lower end to receive abobbin core. said hub 55 extending upwardly from the pulley, a second said cup being of materially less` pulley rotatably mounted on said upward extension but held against movement lengthwise thereof, a cup carried by said second pulley and supporting a traveler ring surrounding the spindle, said cup below said ring being of materially less depth than the length of a bobbin core, the parts being so proportioned that a bobbin core in the space between the spindle and hub will project upwardly within said ring, whereby uponrelative movement between said rails said core may move with said spindle upwardly in said space and within said cup while thread is being wound on the core to form a bobbin, and means to` rotate said pulleys independently of each other.

5. A twisting mechanism comprising a spindle, two pulleys surrounding said spindle and spaced lengthwise. thereof, a traveler ring carried by one of said pulleys and the other pulley being splined to the spindle, means providing an annular space for a bobbin core between said spindle and both of said pulleys, and means to rotate said pulleys independently of each other.

' 6. A twisting mechanism comprising a spindle, a pulley having an elongated hub with an extension beyond the pulley, said' hub surroundingl said spindle and splined thereto but spaced therefrom for the major portion of its length, thus forming a space for a bobbin core, a second pulley rotatably mounted on said extension and carrying a traveler ring, and means to drive said pulleys independently of each other.

7. A twisting mechanism comprising a spindle, a pulley having an elongated hub with an extension beyond the pulley. said hub surrounding said spindle and splined thereto but spaced therefrom for the najor portion of its length, thus forming a space for a bobbin core," a second pulley rotatably mounted on .said extension and carrying a traveler ring, means to drive s'aid pulleys independently of each other, and means preventing relative movement between said pulleys lengthwise of the spindle.

8. A twisting mechanism comprising a spindle, two pulleys surrounding said spindle and spaced lengthwise thereof, a traveler ring carried by one of said pulleys and the -other pulley being splined to the spindle, means providing an annular space for a bobbin core between said spindle and both of said pulleys, means to rotate said pulleys independently of each other, and means preventing relative movement between said pulleys lengthwise o! the spindle.

WILLIAM M. CAMP. 

